package com.forum.core.servlet;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.FileUploadBase.SizeLimitExceededException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import com.forum.core.util.UUIDUtil;
/**
 * @Company < Jinher Technology Development Company LTD. >
 * @Project < Jinher G1 Project >
 * @version < 1.0 >
 * @Author  < yangzq >
 * @Date    < 2010-04-01 >
 * @description 信息发布的XHeditor插件上传组件
 */
@SuppressWarnings("serial")
public class UploadServlet extends HttpServlet{
	private File filedata;
    //原始文件名
	private String filedataFileName;
	//文件类型
	private String filedataContentType;
	private int filedataFileSize;
	private int UploadFileLimit = 10;//上传文件数量限制
	
	
	private String attachdir="//file//xheditor";//上传文件保存路径，结尾不要带/
	private int dirtype = 1;//1:按天存入目录 2:按月存入目录 3:按扩展名存目录  建议使用按天存

	private int maxattachsize=2097152;//最大上传大小，默认是2M
	private String upext="txt,rar,zip,jpg,jpeg,gif,png,swf,wmv,avi,wma,mp3,mid";//上传扩展名
	private int msgtype=2;//返回上传参数的格式：1，只返回url，2，返回参数数组
	
	private String err = "";
	private String msg = "";//返回信息
	private String url="";
	private String path; //文件路径
	private String updateFileName="";
	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request, response);
	}

	@SuppressWarnings({ "deprecation", "unchecked" })
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("UTF-8");
		final long MAX_SIZE = 100 * 1024 * 1024;// 设置上传文件最大为 10M
		// 允许上传的文件格式的列表
		@SuppressWarnings("unused")
		final String[] allowedExt = new String[] { "rar","zip"};
		response.setContentType("text/html;charset=UTF-8");
		// 设置字符编码为UTF-8, 这样支持汉字显示
		response.setCharacterEncoding("UTF-8");

		// 实例化一个硬盘文件工厂,用来配置上传组件ServletFileUpload
		DiskFileItemFactory dfif = new DiskFileItemFactory();
		dfif.setSizeThreshold(4096);// 设置上传文件时用于临时存放文件的内存大小,这里是4K.多于的部分将临时存在硬盘
		dfif.setRepository(new File("C://tmp"));// 设置存放临时文件的目录,web根目录下的uploadfile目录

		// 用以上工厂实例化上传组件
		ServletFileUpload sfu = new ServletFileUpload(dfif);
		// 设置最大上传尺寸
		sfu.setSizeMax(MAX_SIZE);

		PrintWriter out = response.getWriter();
		// 从request得到 所有 上传域的列表
		List fileList = null;
		try {
			fileList = sfu.parseRequest(request);
		} catch (FileUploadException e) {// 处理文件尺寸过大异常
			if (e instanceof SizeLimitExceededException) {
				return;
			}
			e.printStackTrace();
		}
		// 没有文件上传
		if (fileList == null || fileList.size() == 0) {
			return;
		}
		// 得到所有上传的文件
		Iterator fileItr = fileList.iterator();
		// 循环处理所有文件
		while (fileItr.hasNext()) {
			FileItem fileItem = null;
			String path = null;
			long size = 0;
			// 得到当前文件
			fileItem = (FileItem) fileItr.next();
			// 忽略简单form字段而不是上传域的文件域(<input type="text" />等)
			if (fileItem == null || fileItem.isFormField()) {
				continue;
			}
			// 得到文件的完整路径
			path = fileItem.getName();
			// 得到文件的大小
			size = fileItem.getSize();
			if ("".equals(path) || size == 0) {
//				out.println("请选择上传文件b<p />");
//				out.println("<a href='MyJsp.jsp' >返回</a>");
				return;
			}

			// 得到去除路径的文件名
			String t_name = path.substring(path.lastIndexOf("\\") + 1);
			// 得到文件的扩展名(无扩展名时将得到全名)
			String t_ext = t_name.substring(t_name.lastIndexOf(".") + 1);
//			System.out.println("t_ext--"+t_ext);
			// 拒绝接受规定文件格式之外的文件类型

			//long now = System.currentTimeMillis();
			// 根据系统时间生成上传后保存的文件名
			// 保存的最终文件完整路径,保存在web根目录下的uploadfile目录下
			//String fame = t_name;
			String fame = UUIDUtil.getUUID();
			url = "file/xhupload/" + fame+"."+t_ext;
			String u_name = request.getRealPath("/") + url;
			
			try {
				// 保存文件
				fileItem.write(new File(u_name));
				String redener = "{err:\""+err+"\",msg:\"../"+url+"\"}";									

				out.println(redener);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}

	}
	

	public File getFiledata() {
		return filedata;
	}

	public void setFiledata(File filedata) {
		this.filedata = filedata;
	}

	public String getFiledataFileName() {
		return filedataFileName;
	}

	public void setFiledataFileName(String filedataFileName) {
		this.filedataFileName = filedataFileName;
	}

	public String getFiledataContentType() {
		return filedataContentType;
	}

	public void setFiledataContentType(String filedataContentType) {
		this.filedataContentType = filedataContentType;
	}

	public int getFiledataFileSize() {
		return filedataFileSize;
	}

	public void setFiledataFileSize(int filedataFileSize) {
		this.filedataFileSize = filedataFileSize;
	}
	
	
}
